Loudspeaker



FIG. 1 is a front elevational view of a loudspeaker showing my new design;

FIG. 2 is a side elevational view thereof, the opposite side being a mirror image thereof;

FIG. 3 is a top plan view thereof; and,

FIG. 4 is a bottom plan view thereof.

The broken line showings of the two large circles and small central circle in the front view are for illustrative purposes only and form no part of the claimed invention. 

The ornamental design for a loudspeaker, as shown and described. 